First, Happy New Year to all.
Question: is there are preferred gas for the S2000?
I've been using BP since day one. Just curious to hear what you folks are using.
Russ

 

I use 91 octane gas from several stations. Usually Chevron or Shell.

 

Usually Shell and sometimes Esso/Exxon.

 

I use Sunoco 94 in mine. I don’t drive it in the winter so in the fall I put non-ethanol in it so that it is full of non-ethanol fuel when it goes into storage.

 

Y'all do know all gasoline comes from the closest local refinery, right? Any differences in brand-specific "additives" are impossible to detect without laboratory instruments.

I've seen Shell and BP fuel trucks pumping gas into the tanks at the other's stations as well as generic fuel trucks doing the same. So called "Top Fuel" (a trademark) is recommended and to find any fuel not branded as such will take some effort. There are at least 150 Top Tier certified gasolines (including Uncle Buddy's ).

BP is my "everyday carry" fuel only because it's very convenient to my house. Sunoco and Shell are less convenient. I use Sunoco so infrequently I'll have to see if they have 94 but don't see any need for it.

-- Chuck

 

Costco, BJs, local supermarket using discount card. 93 octane. At these places, choices are 87, 89, 93. So 93 it is.

Occasionally I'll use a highway rest stop, as there are plenty of those around here along every route I stray from home on. Usually just to grab a couple gallons to later on make it to one of the above go to places if in hurry to get somewhere and running low. In any case, I choose 91 if its a choice.

 

I use 91 premium ethanol free gas from BP. Or 93 where 91 isn't available.

 

I often look for the "top tier" designation so usually and shell or costco. but what I often care about more is that the station I'm getting fuel from is a busy station that goes through a lot of gas. As not a lot of vehicles use 93 some stations can sit on their gas for a while if they are not busy. Stations that are busy have fresher fuel and often have less chance of water in their fuel.

 

Shell 99 octane wherever I can. If not, I'll get BP premium fuel.

 

The only reason I have specific places I use is that my car is tuned for 93 and thus, need to find 93 to get the most out of the tune. When I lived in MN that was almost always going to be BP. I live near KC now and so I can get it more places. BP has it as well as the Caseys store near my house, so that is where I buy it. And for others like me, if you do not know, there is a website called Find93.com. It is a bit clunky, but has served me well on the road a few times!

There is literally zero reason or benefit for running over 91 octane unless you have a more aggressive tune. It is not cleaning anything better, protecting your engine any better, etc just burning a hole in your wallet. There are a lot of misconceptions regarding octane ratings. Octane level has to do with engine compression and the fuels resistance to igniting prematurely in the compression cycle. If you are running what the car says, running any higher is just costing you more money. So for an s2k with stock motor and no tune, just run 91 like the manual calls for. If you have an aggressive tune that can take advantage of higher octane fuel, then run what the tuner recommends.